EP1913626B1 - Procede de production et utilisation d'un fil et support, notamment a base de niobium, pour des lampes a culot unilateral - Google Patents

Procede de production et utilisation d'un fil et support, notamment a base de niobium, pour des lampes a culot unilateral Download PDF

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Publication number
EP1913626B1
EP1913626B1 EP06776771A EP06776771A EP1913626B1 EP 1913626 B1 EP1913626 B1 EP 1913626B1 EP 06776771 A EP06776771 A EP 06776771A EP 06776771 A EP06776771 A EP 06776771A EP 1913626 B1 EP1913626 B1 EP 1913626B1
Authority
EP
European Patent Office
Prior art keywords
niobium
wire
frame
tantalum
mpa
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06776771A
Other languages
German (de)
English (en)
Other versions
EP1913626A2 (fr
Inventor
Bernd Spaniol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heraeus Deutschland GmbH and Co KG
Original Assignee
Heraeus Materials Technology GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heraeus Materials Technology GmbH and Co KG filed Critical Heraeus Materials Technology GmbH and Co KG
Publication of EP1913626A2 publication Critical patent/EP1913626A2/fr
Application granted granted Critical
Publication of EP1913626B1 publication Critical patent/EP1913626B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/48—Means forming part of the tube or lamp for the purpose of supporting it
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/02—Alloys based on vanadium, niobium, or tantalum
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Definitions

  • the present invention relates to racks for single-ended lamps, in particular niobium-based, wires that can be used for racks, the use of such a rack as a holder and power supply for a burner, and a method for producing a single-ended lamp with a frame.
  • racks for niobium single ended lamps and, in an improved version according to ASTM B392, are made of niobium zirconium alloys with 1% zirconium (NbZr1).
  • the frame On the one hand, the frame has the function of holding the burner and, on the other hand, supplying it with electricity.
  • Undesirable is the shadow caused by the wire passing the burner.
  • wires with diameters of 1.2 mm, 1 mm, 0.72 mm, 0.5 mm and 0.35 mm, depending on the burner dimensions.
  • US 6,326,726 B1 describes a wire frame made of spring-hardened stainless steel, optionally platinum-plated with nickel.
  • the yield strength or tensile strength of the frame is improved. Increasing these room temperature parameters will result in higher material stability at temperatures above 1000 ° C. Although the shadow could be reduced by thinner racks of a much more expensive tantalum-tungsten alloy with 2.5 to 10 wt .-% W, but not the weight of the frame.
  • the invention relates to a frame for single-ended lamps with a reduced diameter and suitable wires for this purpose.
  • Suitable wires are high temperature resistant wires based on niobium or tantalum with improved mechanical properties at temperatures above 1000 ° C, which are achieved by the fact that the wire material is enriched with phosphorus and in particular is converted into a annealed state, or by a yield strength Rp 0.2 of at least 200 MPa or a tensile strength Rm of at least 300 MPa.
  • the yield strength and tensile strength of niobium, tantalum and alloys based on niobium or tantalum could be substantially increased by doping with phosphorus. This is especially true for material in a state where internal stresses are relieved by recrystallization created by annealing.
  • expansion limits Rp 0.2 of more than 150 MPa, in particular more than 200 MPa and preferably more than 250 MPa are provided.
  • the tensile strengths Rm which can be achieved according to the invention are in the relaxed (annealed) state above 250 MPa, in particular above 300 MPa, for example measured on a frame having a diameter of 0.5 mm.
  • niobium doped with phosphorus from the wire according to the not yet published DE 10 2004 011 214 a frame can be molded.
  • This wire or the frame formed from this wire must still be relaxed in order to achieve mechanical properties according to the invention.
  • glowing is suitable.
  • the annealed state refers to a recrystallized state after degradation of internal stresses of the no longer glowing wire.
  • the mechanical properties of the phosphorus-doped niobium are further improved in that the shape is reduced by winding the wire on a coil.
  • Tantalum has better mechanical high temperature properties despite lower yield strength Rp 0.2 of 140 MPa and tensile strength.
  • tantalum-based metals show markedly improved mechanical properties between 1000 and 2000 ° C beyond a yield strength of 150 MPa or a tensile strength of 200. If the expensive tantalum is partially replaced by niobium, the mechanical properties, apart from the maximum temperature resistance, only insignificantly change up to a proportion of about 50% niobium. From a niobium content of 70%, the difference to the niobium becomes small.
  • alloying constituents in particular refractory metals, can certainly have an advantageous effect.
  • Zr, Hf, Ta, Mo and W are suitable for improving the mechanical properties of niobium at over 1000 ° C.
  • Zr, Hf, Mo and W 0.5 to 2 wt .-% have proven.
  • Such alloys are cold formable and lose this property with increasing content of Mo or W.
  • Ta contributes as an alloying ingredient only in the range of by an order of magnitude higher content to significantly improve the mechanical properties, the alloys of Ta and niobium over the individual components always have improved mechanical properties, especially in the high temperature range.
  • the niobium-tantalum alloys or tantalum itself can show quite advantageous effect by other alloying constituents, in particular refractory metals.
  • Zr, Hf, Mo and W are suitable for improving the mechanical properties of niobium-tantalum alloys or tantalum itself at over 1000 ° C.
  • Zr, Hf, Mo and W 0.5 to 2 wt .-% have proven.
  • Such alloys are cold formable and lose this property with increasing content of Mo or W.
  • the yield strength and the tensile strength are defined in DIN EN 10002-1 "Tensile test at room temperature”.
  • Wires based on niobium or tantalum with a yield strength between 200 and 500 MPa or a tensile strength between 300 and 600 MPa have such improved high temperature mechanical properties that racks without loss of stability with 65-75% and less of the conventional diameter at the same time 25 to 50 wt .-% and more material savings are made possible.
  • the shadow is reduced at least to the same extent as the diameter of the wire.
  • the frames according to the invention are at least equivalent with respect to the known frames. In the case of tantalum-based metals, tensile strengths of 150 MPa or tensile strengths of 250 MPa are sufficient for good mechanical properties above 1000 ° C.
  • the limit of the doping with P is given by a reduction in cold workability associated with increasing P content.
  • the racks are formed from these wires, which are based on the one hand niobium or tantalum and on the other hand have a yield strength of at least 200 MPa or a tensile strength of at least 300 MPa. In the case of tantalum-based metals, tensile strengths of 150 MPa or tensile strengths of 250 MPa are already sufficient.
  • Bending and welding are suitable for shaping the frames from the wires.
  • the proven form of the frame is gallows-shaped.
  • the mechanical properties of tantalum and tantalum-niobium alloys can be improved with phosphorus doping.
  • the mechanical properties of the frame wires at more than 1000 ° C. of a frame wire are sufficient to keep a burner stable in its position over the life of a lamp, provided that the tensile strength or yield strength measured at room temperature is achieved with the metal alloys according to the invention.
  • the base material is niobium or tantalum or an alloy thereof, preferably alloyed with minor amounts of zirconium, hafnium, molybdenum or tungsten.
  • the base material is well over 90 wt .-%.
  • the frame material according to the invention is preferably cold formable. This requirement limits the alloying of molybdenum, tungsten and rhenium. Alloys of niobium and tantalum have an improved stability compared to pure metals. However, this effect is of practical importance only from a tantalum content of over 10 wt .-% tantalum.
  • FIG. 1 is a cross-section through a single-ended discharge lamp.
  • 9400 g Nb and 600g P are melted under protective gas in an electric arc furnace under inert gas to a master alloy.
  • the master alloy is very hard and so brittle that it is not even deformable at 1600 ° C.
  • a niobium fused block is doped with P by homogeneously adding a 6% phosphorus-containing master alloy by electron beam melting to give a niobium alloy having 100 to 2000 ⁇ g / g of phosphorus.
  • a niobium alloy of 350 ⁇ 50 ppm phosphorus thus produced is drawn at room temperature into wires having a diameter of 0.84 mm, 0.72 mm, 0.5, 0.35 mm, 0.24 mm and 0.13 mm ,
  • the 0.84 mm wire according to the invention replaces the commercial 1.2 mm wire
  • the 0.72 mm wire according to the invention replaces the commercially available 1 mm wire
  • the 0.5 mm wire according to the invention replaces the commercially available 0.72 mm wire;
  • the 0.35 mm wire according to the invention replaces the commercially available 0.5 mm wire
  • the 0.24 mm wire of the invention replaces the commercial 0.35 mm wire
  • the 0.13 mm wire according to the invention is provided for particularly light burners.
  • the respective wires are annealed, this entropy removal takes place, so that the wires are recrystallized during annealing.
  • the recrystallized wires have the properties desired according to the invention. They can be formed into gallows-shaped frames. For this they are bent or welded. The gallows-shaped racks are welded to the Mo foil 7 and the pin 2.
  • a ceramic burner is held on one side of a frame within a glass bulb.
  • the operating conditions prevailing in the glass space are characterized by the high temperature of the burner, the emitted light and the exclusion of external atmospheric conditions.
  • the burner itself is electrically and mechanically connected via connecting pins.
  • the pins are made of the same material as the frame or alternatively remain unchanged.
  • a molybdenum foil lead and molybdenum outer pins are used in conjunction with a gas-tight crimp connection.
  • the frame and the one pin serve on the one hand to the electrical power supply of the burner and on the other hand to mechanically fix the burner in the lamp, or to hold.
  • a particularly thin frame is provided for this purpose, which meets the electrical and mechanical requirements and thus leads to a saving of material, which in turn is accompanied by the reduction of the shadow.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)

Claims (2)

  1. Procédé de fabrication d'un support pour lampes culottées d'un côté, caractérisé en ce qu'un métal à base de niobium ou de tantale ou d'un alliage de ceux-ci est dopé avec du phosphore et le métal dopé est transformé à froid en un fil qui est recuit en tant que fil et moulé en un support.
  2. Utilisation d'un support constitué d'un métal dopé avec du phosphore à base de niobium ou de tantale ou d'un alliage de niobium et de tantale pour l'amenée de courant et la fixation simultanées pour un brûleur dans une lampe culottée d'un côté.
EP06776771A 2005-08-12 2006-08-11 Procede de production et utilisation d'un fil et support, notamment a base de niobium, pour des lampes a culot unilateral Not-in-force EP1913626B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005038551A DE102005038551B3 (de) 2005-08-12 2005-08-12 Draht und Gestell für einseitig gesockelte Lampen auf Basis von Niob oder Tantal sowie Herstellungsverfahren und Verwendung
PCT/EP2006/007952 WO2007020014A2 (fr) 2005-08-12 2006-08-11 Fil et support, notamment a base de niobium, pour des lampes a culot unilateral, ainsi que procede de production correspondant et utilisation

Publications (2)

Publication Number Publication Date
EP1913626A2 EP1913626A2 (fr) 2008-04-23
EP1913626B1 true EP1913626B1 (fr) 2012-10-03

Family

ID=37561039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776771A Not-in-force EP1913626B1 (fr) 2005-08-12 2006-08-11 Procede de production et utilisation d'un fil et support, notamment a base de niobium, pour des lampes a culot unilateral

Country Status (6)

Country Link
US (1) US7994692B2 (fr)
EP (1) EP1913626B1 (fr)
JP (1) JP5114405B2 (fr)
CN (1) CN101243539B (fr)
DE (1) DE102005038551B3 (fr)
WO (1) WO2007020014A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046899B3 (de) * 2007-09-28 2009-02-12 W.C. Heraeus Gmbh Stromdurchführung durch Keramikbrenner in Halogen-Metalldampflampen
DE202008007518U1 (de) * 2008-06-05 2008-08-21 Osram Gesellschaft mit beschränkter Haftung Hochdruckentladungslampe
CN102842473B (zh) * 2011-06-23 2016-04-13 海洋王照明科技股份有限公司 灯头
US9470462B2 (en) 2012-12-14 2016-10-18 TITAN Metal Fabricators Heat exchanger for heating hydrochloric acid pickling solution, a system and method for pickling, and a method of manufacturing steel products
CN104903983A (zh) * 2013-02-26 2015-09-09 宁夏东方钽业股份有限公司 一种电容器级钽铌合金丝及其制造方法

Family Cites Families (18)

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US3780331A (en) * 1972-09-22 1973-12-18 Westinghouse Electric Corp Apparatus and method for eliminating microcracks in alumina ceramic discharge devices
US3825802A (en) * 1973-03-12 1974-07-23 Western Electric Co Solid capacitor
US3882346A (en) * 1973-11-05 1975-05-06 Gen Electric Ceramic arc tube mounting structure
US4110656A (en) * 1977-01-13 1978-08-29 Westinghouse Electric Corp. Method for mounting electrodes in high pressure sodium lamps and resulting article
US4254355A (en) * 1978-09-11 1981-03-03 General Electric Company Ceramic arc tube mounting
JPS5671269A (en) * 1979-11-14 1981-06-13 Mitsubishi Electric Corp Metallic vapor discharge lamp
US5171379A (en) * 1991-05-15 1992-12-15 Cabot Corporation Tantalum base alloys
DE9112690U1 (de) * 1991-10-11 1991-12-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
JP3493677B2 (ja) * 1992-12-17 2004-02-03 日本電池株式会社 両口金形高圧ナトリウムランプ
CZ301097B6 (cs) * 1997-02-19 2009-11-04 H.C. Starck Gmbh Tantalový prášek sestávající z aglomerátu, zpusob jeho výroby a z nej získané slinuté anody
JP2848371B2 (ja) * 1997-02-21 1999-01-20 日本電気株式会社 有機ｅｌ表示装置及びその製造方法
US6326721B1 (en) * 1999-02-08 2001-12-04 Philips Electronics North America Corp. HID lamp having arc tube mounting frame which relieves thermal stress
DE19915920A1 (de) * 1999-04-09 2000-10-19 Heraeus Gmbh W C Metallisches Bauteil und Entladungslampe
JP3718412B2 (ja) * 2000-06-01 2005-11-24 キャボットスーパーメタル株式会社 ニオブまたはタンタル粉末およびその製造方法
JP2002245971A (ja) * 2000-12-12 2002-08-30 Toshiba Lighting & Technology Corp 高圧放電ランプ、高圧放電ランプ点灯装置および照明装置
WO2003019592A2 (fr) * 2001-08-22 2003-03-06 Showa Denko K.K. Condensateur
DE10304756B4 (de) * 2003-02-05 2005-04-07 W.C. Heraeus Gmbh Sauerstoffangereicherter Niob-Draht
DE102004011214A1 (de) * 2004-03-04 2005-10-06 W.C. Heraeus Gmbh Hochtemperaturbeständiger Niob-Draht

Also Published As

Publication number Publication date
CN101243539A (zh) 2008-08-13
EP1913626A2 (fr) 2008-04-23
US20100141181A1 (en) 2010-06-10
US7994692B2 (en) 2011-08-09
DE102005038551B3 (de) 2007-04-05
JP5114405B2 (ja) 2013-01-09
WO2007020014A2 (fr) 2007-02-22
WO2007020014A3 (fr) 2007-06-21
CN101243539B (zh) 2011-09-14
JP2009504908A (ja) 2009-02-05

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